ICS Triplex T8821 Digital Input Module Brand New

Description

The Trusted 40 Channel 120 Vdc Digital Input FTA T8821 provides termination for a maximum of 40 input channels from various types of field devices which generate a digital input. The supply for the field is derived from dual 120 Vdc feeds which are ‘commoned’ via diodes on the FTA. Indication of the presence of the power supply is provided by a green LED. The supply is then fed to each channel. The supply voltage to the field is fed via the 50 mA fuse. This effectively limits the current in the field loop. The incoming signal (digital) from the field device is fed directly to the digital input module. Line monitoring components (if required) provide the necessary thresholds used by the input module to detect the field loop/device status, i.e. open/short circuit, alarm etc. The cable linking the 40 channels on the input module to the FTA is terminated at the 96-way socket SK1. SmartSlot (Version 1) signals from the module are connected to SK1. The SmartSlot connector is SK2 and is also a 96-way socket. This connector is not used where SmartSlot Version 2 is employed within the Trusted System. The dual dc field power supplies are connected to the FTA via a 5-way terminal block PWR TB. The input signals from thefield (40-off) are connected by 2-wire arrangements terminated on 12-off 3-way terminal blocks and 2-off 2-way.Trusted 40 Channel 120 Vdc Digital Input FTA T8821 is designed to be mounted on either of the TS32 or TS35 DIN rails in the horizontal or vertical positions as required.

Advantage Products

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②Schneider(Schneider Electric)Series

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④Westinghouse Series

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